Regardless of flow restrictions it will help drop temps. Most NB temps are extremely high and the cooler on the Evga is very flimsy and almost toy like. I popped it off yesterday and found the thermal paste adequately applied but the NB heatsink is a joke. It might have been a cheap Cracker Jack toy with a 20mm fan on it. :S
Either way this would be an awesome addon that I may consider for future loop upgrades.